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                <h1 class="post-title" itemprop="name headline"> 利用Sass自动生成padding和margin边距样式 </h1>
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                <h2 id="需求分析"><a href="#需求分析" class="headerlink" title="需求分析"></a>需求分析</h2>
                <p>有需求才有动力！ 写CSS的时候，你经常会遇到要设置一个小边距，比如设置： 所有内边距10px，外左边距20px，内右边距0，上下内边距50px，外左右边距自动…. 而你是不是又不想自己单独为它们定义一个class，然后把padding, margin之类的写进去？ 举例如下： 现在我有两个p标签，我想让这两个p标签中间相隔10px，那是不是需要？</p>
                <figure class="highlight xml">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="tag">&lt;<span class="name">p</span> <span class="attr">style</span>=<span class="string">"margin-bottom:10px"</span>&gt;</span>Hello<span class="tag">&lt;/<span class="name">p</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">p</span>&gt;</span>World<span class="tag">&lt;/<span class="name">p</span>&gt;</span></span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>又或者</p>
                <figure class="highlight cpp">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line">&lt;p <span class="class"><span class="keyword">class</span>="<span class="title">m</span>"&gt;<span class="title">Hello</span>&lt;/p&gt;</span></span><br><span class="line"><span class="class">&lt;p&gt;<span class="title">World</span>&lt;/p&gt;</span></span><br><span class="line"><span class="class"></span></span><br><span class="line"><span class="class">.<span class="title">m</span> &#123;</span></span><br><span class="line">    margin-bottom: <span class="number">10</span>px;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>类似这样的情况多了去了，每次都要定个样式就为了解决个边距问题？ 能忍吗？能忍吗？反正我是不能忍。改改改，燥起来！</p>
                <h2 id="协议规定"><a href="#协议规定" class="headerlink" title="协议规定"></a>协议规定</h2>
                <p>那么为了解决这么一个问题，我们首先要想好解决标准。</p>
                <h3 id="边距层级"><a href="#边距层级" class="headerlink" title="边距层级"></a>边距层级</h3>
                <p>首先边距问题，我们首先要定义这么几个层级： 极小、很小、小、正常、中等、大、很大、极大。 对应的边距划分为： 2px、5px、10px、15px、20px、30px、40px、50px。 那么代号就标记为： xxs、xs、sm、‘空’、md、lg、xl、xxl。 另外我们还有其他的样式，比如自动auto、初始化initial、继承inherit、无边距none。 那么代号标记为auto、ii、ih、none。 这样的划分基本可以满足需求。</p>
                <h3 id="简称划分"><a href="#简称划分" class="headerlink" title="简称划分"></a>简称划分</h3>
                <p>然后定义几个简称： 我们用到的单词有内边距、外边距、上下左右等，那么定义如下： padding-&gt;p、margin-&gt;m、right-&gt;r、left-&gt;l、top-&gt;t、bottom-&gt;b、horizontal-&gt;h、vertical-&gt;v。 其中horizontal和vertical指代水平方向和垂直方向，也就是同时设置左右或者同时设置上下。 当然不能忽略了反向边距，比如外边距是负10px，这个也需要用一个简称，我们定义为n，是反向的意思。 如此一来，所有的简称和边距就规定好了。</p>
                <h2 id="实例说明"><a href="#实例说明" class="headerlink" title="实例说明"></a>实例说明</h2>
                <p>通过上面的层级关系和简称划分，我们可以对他们进行自由组合，形成一个个class样式。比如： .p-t-xs 即为上内边距是5px，.p-h-md 即为左右内边距是20px，.p-b-n-lg 即为下内边距是-30px， .p-r-xxl 即为右内边距是50px，.p-t 即为上内边距为正常边距15px（正常边距省略即可），.p-n 即为内边距是-15px。 .p-v-n 即为上下内边距是-15px，.m-h-auto 即为水平左右外边距是自动auto, .m-t-ii 即为上外边距是初始化initial。 .m-r-none 即为右外边距是0。 怎样？通过这样的定义，能不能找出规律？即 第一个字母p或者m，代表padding或者margin。 第二个字母代表方向，t上方、b下方、l左方、r右方、v上方和下方、h左方和右方。 第三个（组）字母代表距离，xs是+2px，n-lg是-30px，空是自动边距15px，n是反向正常值-15px，ii是初始化，none是无，auto是自动边距。 怎样？有了这些定义，我们是不是就能非常方便地设置边距样式了？刚才的边距怎样解决？很简单，只需要</p>
                <figure class="highlight xml">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="tag">&lt;<span class="name">p</span> <span class="attr">class</span>=<span class="string">"m-b-sm"</span>&gt;</span>Hello<span class="tag">&lt;/<span class="name">p</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">p</span>&gt;</span>World<span class="tag">&lt;/<span class="name">p</span>&gt;</span></span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>如果一个网页里有很多样式，那只需要把整个样式文件引入，自由地添加class就好了。</p>
                <h2 id="编写Sass"><a href="#编写Sass" class="headerlink" title="编写Sass"></a>编写Sass</h2>
                <p>这么多组合呢？写CSS不累死了？检查也不好检查。 怎么办？上Sass！ 首先我们先定义一层映射，边距映射：</p>
                <figure class="highlight groovy">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="string">$map:</span> (<span class="string">none:</span> <span class="number">0</span>, <span class="string">auto:</span> auto, <span class="string">ii:</span> initial, <span class="string">ih:</span> inherit, <span class="string">xxs:</span> <span class="number">2</span>px, <span class="string">xs:</span> <span class="number">5</span>px, <span class="string">sm:</span> <span class="number">10</span>px, <span class="string">''</span>: <span class="number">15</span>px, <span class="string">md:</span> <span class="number">20</span>px, <span class="string">lg:</span> <span class="number">30</span>px, <span class="string">xl:</span> <span class="number">40</span>px, <span class="string">xxl:</span> <span class="number">50</span>px,</span><br><span class="line">        n-<span class="string">xxs:</span> <span class="number">-2</span>px, n-<span class="string">xs:</span> <span class="number">-5</span>px, n-<span class="string">sm:</span> <span class="number">-10</span>px, <span class="string">n:</span> <span class="number">-15</span>px, n-<span class="string">md:</span> <span class="number">20</span>px, n-<span class="string">lg:</span> <span class="number">30</span>px, n-<span class="string">xl:</span> <span class="number">-40</span>px, n-<span class="string">xxl:</span> <span class="number">-50</span>px);</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>这里定义了所有的边距和它的简称。 然后我们尝试写一下padding的函数，遍历一下：</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line"> <span class="selector-class">.p-</span>#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">   <span class="attribute">padding</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line"> &#125;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>这，那空的咋办? 不能留个下划线啊。判断一下</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@function</span> line(<span class="variable">$style</span>) &#123;</span><br><span class="line">  <span class="keyword">@if</span> <span class="variable">$style</span> != <span class="string">''</span> &#123;</span><br><span class="line">    <span class="keyword">@return</span> <span class="string">'-'</span>;</span><br><span class="line">  &#125; <span class="keyword">@else</span> &#123;</span><br><span class="line">    <span class="keyword">@return</span> <span class="string">''</span>;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">  <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line"> <span class="selector-class">.p</span>#&#123;line&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">   <span class="attribute">padding</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line"> &#125;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>这样我们就生成了所有padding边距的设置。 好接下来设置下水平和垂直边距吧，这个就需要两句话了，比如设置水平你得写padding-left 和 padding-right。 有的小伙伴说了，可以直接写一个啊，比如 padding: 0 20px 就可以，不过这样你同时设置了上下边距。即便上下边距我们设置成inherit或者什么其他的，那也多多少少在某种情况下产生影响。 所以这里我们直接分开，而且就算不分开，你之前的映射就要修改，还是麻烦的。 所以这里定义如下：</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">    <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">    <span class="selector-class">.p-v</span>#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">      <span class="attribute">padding-top</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      <span class="attribute">padding-bottom</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">  </span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">    <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">    <span class="selector-class">.p-h</span>#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">      <span class="attribute">padding-left</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      <span class="attribute">padding-right</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>那最后，单边距的定义如下，我们给它加个循环：</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="variable">$directions</span>: (t: top, b: bottom, l: left, r:right);</span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$d-key</span>, <span class="variable">$d-value</span> in <span class="variable">$directions</span> &#123;</span><br><span class="line">    <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">      <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">      <span class="selector-class">.p-</span>#&#123;<span class="variable">$d-key</span>&#125;#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">        <span class="attribute">padding</span>-#&#123;<span class="variable">$d-value</span>&#125;: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>如此一来，padding的就写好了！ 那么margin的怎么办？很简单，再加一层循环，最终代码如下：</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@function</span> line(<span class="variable">$style</span>) &#123;</span><br><span class="line">  <span class="keyword">@if</span> <span class="variable">$style</span> != <span class="string">''</span> &#123;</span><br><span class="line">    <span class="keyword">@return</span> <span class="string">'-'</span>;</span><br><span class="line">  &#125; <span class="keyword">@else</span> &#123;</span><br><span class="line">    <span class="keyword">@return</span> <span class="string">''</span>;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="variable">$map</span>: (none: <span class="number">0</span>, auto: auto, ii: initial, ih: inherit, xxs: <span class="number">2px</span>, xs: <span class="number">5px</span>, sm: <span class="number">10px</span>, <span class="string">''</span>: <span class="number">15px</span>, md: <span class="number">20px</span>, lg: <span class="number">30px</span>, xl: <span class="number">40px</span>, xxl: <span class="number">50px</span>,</span><br><span class="line">        n-xxs: -<span class="number">2px</span>, n-xs: -<span class="number">5px</span>, n-sm: -<span class="number">10px</span>, n: -<span class="number">15px</span>, n-md: <span class="number">20px</span>, n-lg: <span class="number">30px</span>, n-xl: -<span class="number">40px</span>, n-xxl: -<span class="number">50px</span>);</span><br><span class="line"></span><br><span class="line"><span class="variable">$names</span>: (m: margin, p: padding);</span><br><span class="line"><span class="keyword">@each</span> <span class="variable">$n-key</span>, <span class="variable">$n-value</span> in <span class="variable">$names</span> &#123;</span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">    <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">    .#&#123;<span class="variable">$n-key</span>&#125;#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">      #&#123;<span class="variable">$n-value</span>&#125;: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line"></span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">    <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">    .#&#123;<span class="variable">$n-key</span>&#125;-v#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">      #&#123;<span class="variable">$n-value</span>&#125;-<span class="attribute">top</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      #&#123;<span class="variable">$n-value</span>&#125;-<span class="attribute">bottom</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line"></span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">    <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">    .#&#123;<span class="variable">$n-key</span>&#125;-h#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">      #&#123;<span class="variable">$n-value</span>&#125;-<span class="attribute">left</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      #&#123;<span class="variable">$n-value</span>&#125;-<span class="attribute">right</span>: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line"></span><br><span class="line">  <span class="variable">$directions</span>: (t: top, b: bottom, l: left, r:right);</span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$d-key</span>, <span class="variable">$d-value</span> in <span class="variable">$directions</span> &#123;</span><br><span class="line">    <span class="keyword">@each</span> <span class="variable">$style</span>, <span class="variable">$padding</span> in <span class="variable">$map</span> &#123;</span><br><span class="line">      <span class="variable">$line</span>: line(<span class="variable">$style</span>);</span><br><span class="line">      .#&#123;<span class="variable">$n-key</span>&#125;-#&#123;<span class="variable">$d-key</span>&#125;#&#123;<span class="variable">$line</span>&#125;#&#123;<span class="variable">$style</span>&#125; &#123;</span><br><span class="line">        #&#123;<span class="variable">$n-value</span>&#125;-#&#123;<span class="variable">$d-value</span>&#125;: <span class="variable">$padding</span> <span class="meta">!important</span>;</span><br><span class="line">      &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>如此一来，Sass便成功生成了。</p>
                <h2 id="编译"><a href="#编译" class="headerlink" title="编译"></a>编译</h2>
                <p>写完了那自然要编译一下咯，废话不多说上gulp。</p>
                <figure class="highlight less">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="selector-tag">gulp</span><span class="selector-class">.task</span>(<span class="string">'styles'</span>, () =&gt; &#123;</span><br><span class="line">    <span class="selector-tag">return</span> <span class="selector-tag">gulp</span><span class="selector-class">.src</span>(path.sass)</span><br><span class="line">    <span class="selector-class">.pipe</span>(plumber())</span><br><span class="line">    <span class="selector-class">.pipe</span>(sourcemaps.init())</span><br><span class="line">    <span class="selector-class">.pipe</span>(sass(&#123;<span class="attribute">outputStyle</span>: <span class="string">'compressed'</span>&#125;).on(<span class="string">'error'</span>, sass.logError))</span><br><span class="line">    <span class="selector-class">.pipe</span>(sourcemaps.write())</span><br><span class="line">    <span class="selector-class">.pipe</span>(autoprefixer(&#123;</span><br><span class="line">        <span class="attribute">browsers</span>: [<span class="string">'last 2 versions'</span>],</span><br><span class="line">        <span class="attribute">cascade</span>: true,</span><br><span class="line">        <span class="attribute">remove</span>: true</span><br><span class="line">    &#125;))</span><br><span class="line">    <span class="selector-class">.pipe</span>(gulp.dest(path.dest.css));</span><br><span class="line">&#125;);</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>或者你们有考拉编译器啊或者其他的都行，能编译就好。 生成的部分结果展示如下：</p>
                <figure class="highlight css">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="selector-class">.m-none</span>&#123;<span class="attribute">margin</span>:<span class="number">0</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-auto</span>&#123;<span class="attribute">margin</span>:auto <span class="meta">!important</span>&#125;<span class="selector-class">.m-ii</span>&#123;<span class="attribute">margin</span>:initial <span class="meta">!important</span>&#125;<span class="selector-class">.m-ih</span>&#123;<span class="attribute">margin</span>:inherit <span class="meta">!important</span>&#125;<span class="selector-class">.m-xxs</span>&#123;<span class="attribute">margin</span>:<span class="number">2px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-xs</span>&#123;<span class="attribute">margin</span>:<span class="number">5px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-sm</span>&#123;<span class="attribute">margin</span>:<span class="number">10px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m</span>&#123;<span class="attribute">margin</span>:<span class="number">15px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-md</span>&#123;<span class="attribute">margin</span>:<span class="number">20px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-lg</span>&#123;<span class="attribute">margin</span>:<span class="number">30px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-xl</span>&#123;<span class="attribute">margin</span>:<span class="number">40px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-xxl</span>&#123;<span class="attribute">margin</span>:<span class="number">50px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-xxs</span>&#123;<span class="attribute">margin</span>:-<span class="number">2px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-xs</span>&#123;<span class="attribute">margin</span>:-<span class="number">5px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-sm</span>&#123;<span class="attribute">margin</span>:-<span class="number">10px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n</span>&#123;<span class="attribute">margin</span>:-<span class="number">15px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-md</span>&#123;<span class="attribute">margin</span>:<span class="number">20px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-lg</span>&#123;<span class="attribute">margin</span>:<span class="number">30px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-xl</span>&#123;<span class="attribute">margin</span>:-<span class="number">40px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-n-xxl</span>&#123;<span class="attribute">margin</span>:-<span class="number">50px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-none</span>&#123;<span class="attribute">margin-top</span>:<span class="number">0</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">0</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-auto</span>&#123;<span class="attribute">margin-top</span>:auto <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:auto <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-ii</span>&#123;<span class="attribute">margin-top</span>:initial <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:initial <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-ih</span>&#123;<span class="attribute">margin-top</span>:inherit <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:inherit <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-xxs</span>&#123;<span class="attribute">margin-top</span>:<span class="number">2px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">2px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-xs</span>&#123;<span class="attribute">margin-top</span>:<span class="number">5px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">5px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-sm</span>&#123;<span class="attribute">margin-top</span>:<span class="number">10px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">10px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v</span>&#123;<span class="attribute">margin-top</span>:<span class="number">15px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">15px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-md</span>&#123;<span class="attribute">margin-top</span>:<span class="number">20px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">20px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-lg</span>&#123;<span class="attribute">margin-top</span>:<span class="number">30px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">30px</span> <span class="meta">!important</span>&#125;<span class="selector-class">.m-v-xl</span>&#123;<span class="attribute">margin-top</span>:<span class="number">40px</span> <span class="meta">!important</span>;<span class="attribute">margin-bottom</span>:<span class="number">40px</span> <span class="meta">!important</span>&#125;</span><br></pre>
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                <p>具体的结果等你自己编译一下看看就好啦。</p>
                <h2 id="资源下载"><a href="#资源下载" class="headerlink" title="资源下载"></a>资源下载</h2>
                <p>当然有的小伙伴一定嫌麻烦，别急，我这都给你准备好了，编译好的结果放送给大家！ <a href="http://res.cuiqingcai.com/css/pm.css" target="_blank" rel="noopener">pm.css</a> <a href="http://res.cuiqingcai.com/css/pm.min.css" target="_blank" rel="noopener">pm.min.css</a> 需要使用的小伙伴们直接在HTML代码中引入就好啦！</p>
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                        <pre><span class="line">&lt;link <span class="attribute">rel</span>=<span class="string">"stylesheet"</span> <span class="attribute">href</span>=<span class="string">"http://res.cuiqingcai.com/css/pm.css"</span>&gt;</span><br><span class="line">&lt;link <span class="attribute">rel</span>=<span class="string">"stylesheet"</span> <span class="attribute">href</span>=<span class="string">"http://res.cuiqingcai.com/css/pm.min.css"</span>&gt;</span><br></pre>
                      </td>
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                </figure>
                <p>本文介绍了使用Sass自定义边距样式的流程，希望对大家有帮助！</p>
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